Corn-harrow.



J. NIELSEN.

CORN HARROW.

APPLICATION FILED JULY l3. 1914.

1,182,304, Patented May 9, 1916.

2 SHEET$5HEET 1.

46/ Mama THE coLuMBu PLA IQGRAPM c0., WASHINGTON, D. c.

J. NIELSEN.

CORN HARROW.

APPLICATION FILED JULY 13. 1914.

Patented May 9, 1916.

2 SHEETSSHEET 2 I/@1111 e as m Siren W1 0 UNITED STATES PATENT OFFICE.

JOHANNES NIELSEN, OF CHATSWORTH, IOWA.

CORN-HARROW.

Application filed July 13. 1914.

To all whom it may concern Be it known that I. JOHANNES NiELsnx. acitizen of the United States, residing at (.lhatsworth, in the county ofSioux. State of Iowa. have invented certain new and useful Improvementsin Corn-Harrows; and I do hereby declare the following to be a full.clear. and exact description of the invention. such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to agricultural llll plenients and has specialreference to a corn harrow of the two row type.

The principal object of the invention is to improve and simplify thegeneral construction of devices of this character.

A further object of the invention is to provide an improved form offrame for carrying the harrow teeth.

\Vith the above and other objects in view the invention consists ingeneral of certain novel details of construction and combination ofparts hereinafter fully described, illustrated in the accompanyingdrawings. and specifically claimed.

In the accompanying drawings, like characters of reference indicate likeparts in the several views, and :Figure 1 is a plan view of a harrowconstructed in accordance with this invention. Fig. '2 is a sideelevation thereof. Fig. 3 is a rear view thereof. Fig. 'l' is a detailsection on the line 11 of Fig. 3. Fig. 5 is a detail section on the line5-5 of Fig. 3. Fig. (3 is a detail plan view of the improved toothsupporting frame.

In carrying out the objects of this invention there is provided a maincross bar 10 and secured to this main cross bar is a tongue 11.Extending forwardly from the main cross bar are main frame members 12which are connected by a cross bar 13 at the forward end and this crossbar 13 has its ends bent down as at 14 and provided with a series ofopenings 15. Furthermore braces 16 run from these downward ends to clips17 secured to Z-shaped stub axle 18, the upper end of the latter beingsecured to the cross bar 10 by means of suitable clips 19 so arrangedthat these stub axles 18 may be swung forward or back from theperpendicular as desired. Furthermore other clips 20 serve to securediagonal braces 21 which pass from the substantially vertical branch ofthe stub axle 18 to the member 12 on each side of the machine. It willbe obvious thatv Specification of Letters Patent.

Patented May 9, 1916.

Serial No. 850,821.

the tongue or shaft 11 is also secured to the cross member 13 asindicated by the clip 21. Each of these clips 17 and 20 comprises anarcuate central portion which terminates at each end in a substantiallyparallel jaw between which the brace ends are secured by means of a bolt24. Each of the members 19 consists of a U-shaped clip 25 connected by across bar 26. the arms of the U-shaped clip being threaded and carryingnuts '27 thus forming the usual U-clips. On each of the stub axles 18 ismounted a ground wheel 28 of the ordinary type and extending rearwardlyfrom the tongue or pole 11 is a support 29 carrying a drivers seat 30.

Journaled in a central bearing 31 and in side bearings 32 in the form ofquadrants is a crank axle 33 which is formed in two independent sectionsconnected together by a swivel joint as at 34. this structure en ablingeither end of the crank axle to be turned independently and secured ateach end of the crank axle is a latch lever 35 which cooperates with therespective quadrant 36 of the bearing 32 at that end.

The tooth supporting frame consists of flat bar metal. This bar metalframe comprises an outside member the metal being arranged vertically.that is to say with its longest cross sectional dimension vertical atthe rear end as indicated at 37. The metal is then twisted to form flatside pieces 38 and again twisted at the forward end to form vertical endpieces 89 which terminate forwardly in parallel portions 40 lying onopposite sides of the respective members 14 and being held in positiontherein by means of a suitable bolt 41 which also serves to carry aclevis 42 for the attachment of the draft animal on that side of thedevice. Between the members 38 and reaching from the member 37 to themember 39 are certain flat bars of metal each of which has its endsturned down vertically as indicated at 43 and its central portion turnedflat or horizontally as indicated at 44. Slidably mounted on these fiatportions 38 and 44 are clips 45 which serve to secure the spring harrowteeth 46, the clips being adjustable longitudinally of the respectivebars and being held in desired position by means of suitable set screws48.

It is to be noted that the bolt 41 may be inserted in any of the holes15 so that the forward end of this frame may be raised or lowered asdesired. Connected to each of the crank sections 33 is a respectiveharrow frame supported by a pair of resilient hangers. These resilienthangers consist of chains 48 which are connected at their upper ends toclips 49 secured to the cranks of the crank shafts and are connected attheir lower end to springs 50 which have their lower ends in turnconnected to the central members of the entire tooth frame as indicatedat 51. It is to be understood that these frames are sufiieiently wide tooccupy the space between two rows of corn and are sufhciently separatedto permit a row of corn passing between them.

From the foregoing it will be readily seen that by properly positioningthe forward end of the entire tooth frame the rear end may be raised orlowered as desired and will yield at contact with any obstruction thuspreventing injury to the teeth. It will also be seen that by shiftingthe stub aXles forward or back the height of the draft pole may beregulated as well as the position of the harrow teeth with respect tothe member 10 and driver's seat. There has thus been provided a simpleand efficient device of the kind described and of the characterspecified.

It will be obvious that many minor changes may be made in the form andconstruction of this invention without departing from the materialprinciples thereof. It is not therefore desired to confine the inventionto the exact form herein shown and described, but it is Wished toinclude all such as come properly within the scope claimed.

Having thus described the invention, what is claimed as new, is

In a device of the kind described, a tooth carrying frame comprising anouter member made of flat bar metal having a rear portion with the bararranged vertically, side portions with the bar arranged horizontally,and converging forward portions terminating in parallel extremities,said converging and parallel portions having the bar arrangedvertically; in combination with the longitudinally integral membersformed of similar bar metal and each having its central portion with thebar arranged horizontally and its terminal portions with the bararranged vertically and connected respectively to the vertical portionsof the outer frame.

in testimony whereof, I aflix my signature, in the presence of twowitnesses.

JOHANNES NIELSEN.

\Vitnesses:

J. L. GAMBLE, H. B. DALGLIESII.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

